Kouvola Weather in May
May in Kouvola brings moderate temperatures around 17°C (63°F) during the day, dropping to 6°C (43°F) at night, with some rainfall expected.
Rainfall in Kouvola in May
You can typically expect 10 days of rain this month, averaging around 51 mm (2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Kouvola in May
Kouvola in May gets highs of 17°C (63°F) during the day and drops to 6°C (43°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.Should you favor a climate that's both dry and comfortably warm, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Kouvola's climate page.
Kouvola Temperature in May
Min Temperature
6°C (43°F)
Max Temperature
17°C (63°F)
Chance of Rain
34%
Precipitation
51 mm (2 in)
Rainy days
10 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kouvola typically rise from around 12°C (54°F) at the start of May to approximately 17°C (63°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 8°C (46°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Kouvola in May
Browse day-by-day weather records for Kouvola spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kouvola historical weather extremes in May
Our historical data for Kouvola spans 1976 to 2026, revealing these weather extremes.
- On May 19, 2014, temperatures climbed to 30°C (86°F), marking the warmest May day on record.
- The lowest daytime temperature in May was 2°C (36°F), recorded on May 1, 2005.
- The coldest night in May in Kouvola was on May 2, 1978, with a minimum of -6°C (21°F).
- Peak precipitation in May occurred on May 16, 2003, when 20 mm (0.8 in) of precipitation was measured.
Best Places in Finland in May
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in May →
perfect weather
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tolerable
unpleasant
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What to Wear in Kouvola in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Kouvola in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Kouvola's climate page.
See the full Kouvola climate overview or explore weather in Finland.
